Keychron K4 Ultra 8K, Keychron Apex Red
Keychron K4 Ultra, 96% Tactile
Keychron K4 Ultra 8K, Keychron Apex Red is a fully assembled mechanical keyboard with a 96% layout. This listing includes Keychron Apex Red linear switches. The keyboard supports Bluetooth, 2.4 GHz wireless and USB-C wired data. This selected version has RGB backlighting.
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About this item
- 8000Hz polling rate (2.4GHz wireless/wired) with 0.125ms latency. Compact 96% layout for work and gaming.
- Tri-mode connectivity (2.4GHz wireless, Bluetooth, USB-C wired). Multi-OS support for macOS, Windows, Linux.
- Hot-swappable design with pre-lubed Keychron Apex switches. Double-shot PBT keycaps for durable typing.
- ZMK firmware for customization via Keychron Launcher Web App. Remap keys, macros, polling rate, and RGB tuning.
- Up to 600 hours battery life (backlight off) with 8000 Hz polling rate. South-facing RGB backlighting.
Identity
- Brand
- Keychron
- Model
- K4 Ultra 8K
Build
- Layout
- 96% / 1800
- Switch Type
- Tactile
- Hot-swap
- True
- Keycap Material
- Double-shot PBT
- Profile
- Standard
Connectivity
- Connectivity
- Hybrid (BT + 2.4 GHz + USB)
- Key Count
- 100
- Width
- 391.29 mm
- Backlight
- True
Description
Keychron K4 Ultra 8K, Keychron Apex Red is a fully assembled mechanical keyboard with a 96% layout. This listing includes Keychron Apex Red linear switches.
The keyboard supports Bluetooth, 2.4 GHz wireless and USB-C wired data. This selected version has RGB backlighting.
The manufacturer lists a body width of 391.29 mm and ZMK firmware. Check the selected switch and lighting version when comparing other listings.
Frequently Asked Questions
Is the Keychron K4 Ultra suitable for both gaming and typing?
Yes, the Keychron K4 Ultra is highly suitable for both gaming and typing. Its ultra-fast 8000 Hz polling rate and 0.125ms latency in 2.4 GHz wireless and wired modes make it excellent for competitive gaming, while the compact 96% layout and durable PBT keycaps provide a comfortable and efficient experience for productivity and typing tasks.
Are the switches on the Keychron K4 Ultra hot-swappable?
Absolutely, the Keychron K4 Ultra features a hot-swappable design. This allows you to easily replace the pre-lubed Keychron Apex tactile switches with most 3-pin and 5-pin MX mechanical switches without any soldering, enabling full customization of your typing experience.
What kind of connectivity options does the K4 Ultra offer?
The K4 Ultra offers versatile tri-mode connectivity. You can connect it via low-latency 2.4 GHz wireless with a dongle, Bluetooth 5.2 for pairing with up to three devices, or a reliable USB-C wired connection. This ensures seamless integration across various devices and operating systems.
What is the battery life of the Keychron K4 Ultra?
The Keychron K4 Ultra boasts an impressive battery life, offering up to 600 hours of usage with the backlight turned off, even when operating at an 8000 Hz polling rate. This ensures long-lasting wireless performance for extended work or gaming sessions without frequent recharging.
Is the Keychron K4 Ultra compatible with macOS, Windows, and Linux?
Yes, the Keychron K4 Ultra provides full cross-platform compatibility. It is designed to work seamlessly with macOS, Windows, and Linux operating systems, making it a flexible choice for users with diverse computing environments.
Does the Keychron K4 Ultra support ZMK and Keychron Launcher for customization?
The Keychron K4 Ultra is powered by open-source ZMK firmware, which allows for extensive customization. You can remap keys, create macros, adjust the polling rate, and tune the RGB lighting using the Keychron Launcher Web App, without needing to download any software.
Editor's take
Keychron K4 Ultra 8K, Keychron Apex Red is a fully assembled mechanical keyboard with a 96% layout. This listing includes Keychron Apex Red linear switches.
The keyboard supports Bluetooth, 2.4 GHz wireless and USB-C wired data. This selected version has RGB backlighting.
The manufacturer lists a body width of 391.29 mm and ZMK firmware. Check the selected switch and lighting version when comparing other listings.
This product entry describes the Apex Red; black version. Other versions can have different switches or backlighting.
In categories
From the maker
Extended Wireless Uptime
4000 mAh Rechargeable Lithium Polymer Battery
Compact 96% Layout
Retain a full number pad and function row in a footprint nearly 20% smaller than a traditional full-size keyboard. The 100-key configuration provides complete functionality for productivity and gaming without wasting desk space.
Gasket Mounted Aluminum Body
The full aluminum case provides a solid, weighted foundation. Internally, a gasket mounting structure isolates the plate, delivering a cushioned and refined typing sound with every keystroke. This construction minimizes case ping and enhances acoustic consistency.
Low Profile Mechanical Switches
Equipped with hot-swappable, low-profile Gateron mechanical switches for a reduced travel distance and faster actuation. The slim design reduces wrist strain during long sessions, while the hot-swap sockets allow for tool-free switch customization.
Tri-Mode Wireless Connectivity
Connect via low-latency 2.4GHz wireless for competitive gaming, or pair with up to three devices using Bluetooth 5.1 for seamless multitasking. For a direct connection and charging, the detachable USB-C cable provides a stable, wired mode.
Durable Double-Shot PBT Keycaps
The low-profile keycaps are crafted from durable PBT plastic with a double-shot molding process. This ensures the legends will never fade or wear away. The textured surface resists shine from oils for a clean, consistent feel over time.
ZMK and Keychron Launcher Programmability
Full ZMK and Keychron Launcher support grants you complete control over the keyboard's firmware. Remap any key, create complex macros, and customize lighting effects without needing proprietary software. Your custom layouts are saved directly to the board's onboard memory.
Warranty and Support
Guides and Documents
User reviews
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